Physics Essay

Essay by Salina517 October 2014

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Physics Research Essay

In our human beings, weather is always with us, whenever it is hot or cold.And one year has four seasons which never changes and always occurs.In very cold days, what should we do to make us feel better? We always use electronic devices to make us feel warmer, but how to improve that, and make it more efficiently?

In North of China, we always use air conditioner to raise room temperature and adjust it suitably for ourselves. The air conditioner has been set near the ceiling of the room and that makes a convection of the wind, which is a current that hot air rises and cold air sink and therefore form a circulation. This is the basic knowledge of how it works, but we can't sure how well it works. And I think the main problem in North of China is that, air conditioner actually is for cold air, and it will be more efficiently to cooling, because hot air rises and cold air sinks down, make a convention, but if the air conditioner gives out warm wind, which the hot air will always stay in the top of the room, and the cold wind can't sinks down and form a circulation.

It is not convenient and it will waste a lot of time and electricity to warm the whole room. Due to the heating of the air conditioning is blow out hot air directly by mechanical power, it will causes the air becomes dry in winter. At the same time, air conditioner blows out hot air to strengthen the air circulation, will cause the dust from the floor floats in the sky, and will reduces the indoor air quality. From the point of view of comfort, due to the air conditioners are mostly...